/*
 * 版权所有 (C) 2015 知启蒙(ZHIQIM) 保留所有权利。[遇见知启蒙，邂逅框架梦]
 * 
 * https://zhiqim.org/project/zhiqim_components/zhiqim_manager.htm
 *
 * Zhiqim Manager is licensed under Mulan PSL v2.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *          http://license.coscl.org.cn/MulanPSL2
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 */
package org.zhiqim.manager.action;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.zhiqim.httpd.HttpContext;
import org.zhiqim.httpd.HttpRequest;
import org.zhiqim.httpd.context.annotation.AnIntercept;
import org.zhiqim.httpd.context.core.Action;
import org.zhiqim.kernel.json.Jsons;
import org.zhiqim.kernel.model.Comparators;
import org.zhiqim.kernel.util.Strings;
import org.zhiqim.kernel.util.Validates;
import org.zhiqim.manager.ZmrConstants;
import org.zhiqim.manager.dao.ZmrOperatorDao;
import org.zhiqim.manager.dao.ZmrParamDao;

/**
 * 更换首页主题风格
 *
 * @version v1.0.0 @author zouzhigang 2016-5-28 新建与整理
 */
public class ThemeIndexAction implements Action, ZmrConstants
{
    private List<String> themeNameList;
    
    @Override
    public void execute(HttpRequest request) throws Exception
    {
        HttpContext context = request.getContext();
        if (themeNameList == null)
        {//没数据的情况下第一次加载
            themeNameList = loadTheme(request);
        }
        
        List<String[]> themeList = new ArrayList<>();
        for (String name : themeNameList)
        {
            String[] template = new String[]{name, context.getRootPath("/ztmpl/zhiqim_manager/"+name+"/preview_index.png")};
            themeList.add(template);
        }
        
        request.setAttribute("themeList", themeList);
    }

    @AnIntercept("chkZmrLogin")
    public void update(HttpRequest request) throws Exception
    {
        String theme = request.getParameter("theme");
        if (Validates.isEmpty(theme))
        {
            request.setResponseError("请选择一个有效的主题");
            return;
        }
        
        if (!Validates.isContain(themeNameList, theme))
        {
            request.setResponseError("请选择一个有效的主题选项");
            return;
        }
        
        ZmrParamDao.doUpdateThemeIndex(theme);
        request.setContextAttribute(ZMR_THEME_INDEX, theme);
        
        //增加操作日志
        ZmrOperatorDao.addOperateLog(request, "切换首页主题", Jsons.toString("theme", theme));
    }
    
    /** 加载主题 */
    static List<String> loadTheme(HttpRequest request) throws Exception
    {
        List<String> themeList = new ArrayList<>();
        List<String> nameList = request.getContext().getResourceNameList("/ztmpl/zhiqim_manager");
        for (String name : nameList)
        {
            if (!name.endsWith("/"))
                continue;//文件过滤掉
            
            name = Strings.trimRight(name, "/");
            themeList.add(name);
        }
        
        //排序一次
        Collections.sort(themeList, new Comparators.StringAsc());
        return themeList;
    }
}
